{"product_id":"208-3378-050-seven-inch-column","title":"1–5 L Caps, PP, Natural — 208-3378-050 | 200\/Bag | Caplugs® Evergreen","description":"\u003ch2\u003e7\" SPE Columns with Fine Filter (15–45 µm), Polystyrene, Natural — 200\/Bag (208-3378-050)\u003c\/h2\u003e\n\u003cp\u003eThese 7-inch polystyrene solid-phase extraction columns feature an integrated fine-filter disk rated at 15–45 microns, delivering the highest filtrate clarity in the Caplugs® Evergreen column line for demanding LC-MS\/MS injection preparation, confirmatory GC-MS cleanup, and dissolution testing workflows. The 7-inch body provides maximum sorbent bed volume for preparative-scale SPE, high-volume environmental sampling, and complex-matrix extractions where a shorter column bed is insufficient for the required retention or wash-step separation. Supplied non-sterile in bags of 200, part number 208-3378-050 is well suited to high-throughput QC and research laboratories that process large sample loads routinely.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003e208-3378-050\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Length\u003c\/td\u003e\n\u003ctd\u003e7\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003eFine (15–45 microns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (PS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-Sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e200\/Bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBPA \/ Phthalate\u003c\/td\u003e\n\u003ctd\u003eBPA-Free, Phthalate-Free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePreparative-scale SPE requiring maximum sorbent bed volume and high filtrate clarity\u003c\/li\u003e\n\u003cli\u003eHigh-volume environmental water sampling (1–5 L sample loads) with SPE cleanup prior to GC-MS or LC-MS analysis\u003c\/li\u003e\n\u003cli\u003eSoil and sediment extract cleanup for GC-MS and LC-MS confirmatory methods\u003c\/li\u003e\n\u003cli\u003eLC-MS\/MS injection preparation where residual particulates cause analytical column fouling or injection carryover at low detection limits\u003c\/li\u003e\n\u003cli\u003eConfirmatory GC-MS cleanup of complex biological and environmental matrices\u003c\/li\u003e\n\u003cli\u003eFood and agricultural residue QC — pesticide, mycotoxin, and veterinary drug preparation at preparative scale\u003c\/li\u003e\n\u003cli\u003ePharmaceutical preparative SPE for fraction collection and scale-up from mini-column methods\u003c\/li\u003e\n\u003cli\u003eHigh-volume plasma and urine extract fractionation in bioanalytical and research settings\u003c\/li\u003e\n\u003cli\u003eDissolution testing sample preparation where particulate-free filtrate is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe 7-inch column body is sized to fit standard large-format SPE manifold configurations, including 20-port and 24-port tube-format vacuum manifolds where the longer body occupies a standard large tube position. It is equally compatible with gravity-flow bench stands designed for 7-inch columns. Laboratories scaling up established 5-inch SPE methods will find the 7-inch bed provides a direct volume scale-up path without changes to solvent chemistry or manifold platform. For applications requiring coarser filtration in the same 7-inch format, sibling products 208-3376-050 (Coarse, 90–135 µm) and 208-3377-050 (Medium, 45–90 µm) are available from the same Caplugs® Evergreen column line.\u003c\/p\u003e\n\n\u003ch2\u003eChemical Resistance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReagent \/ Condition\u003c\/th\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAqueous buffers \/ saline\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDilute acids and bases\u003c\/td\u003e\n\u003ctd\u003eGood for routine SPE conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethanol (up to ~50%)\u003c\/td\u003e\n\u003ctd\u003eGood — suitable for typical SPE conditioning and wash steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcetone\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorinated solvents (chloroform, DCM)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAromatic solvents (toluene, hexane)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthanol (\u0026gt;70%)\u003c\/td\u003e\n\u003ctd\u003eNot recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoclave \/ heat sterilization\u003c\/td\u003e\n\u003ctd\u003eNot suitable — PS is not autoclavable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eMade in USA, these columns are manufactured under ISO 9001 quality management from FDA-compliant, BPA-free, phthalate-free polystyrene resin. The integrated filter disk is molded directly into the column body rather than bonded, eliminating adhesive extractables at the frit interface — a critical advantage for sensitive LC-MS, GC-MS, and enzyme-based detection workflows. LabSupplies.com is an authorized dealer of Caplugs® Evergreen consumables and ships from USA inventory, typically the same business day for stocking items, with volume pricing available for institutional purchasers and grant-funded laboratories.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes the fine (15–45 µm) filter grade the right choice for LC-MS\/MS prep?\u003c\/strong\u003e\u003cbr\u003eThe 15–45 µm pore rating delivers the highest filtrate clarity in the column line, removing fine particulates that would otherwise cause analytical column fouling, increased back-pressure, or injection carryover at the trace detection limits typical of LC-MS\/MS and GC-MS confirmation methods. Coarser filter grades pass more solids and are better suited to gravity-flow screening workflows where downstream sensitivity requirements are less stringent.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the filter disk bonded into the column, and could adhesive extractables affect my results?\u003c\/strong\u003e\u003cbr\u003eNo adhesive is used. The filter disk is molded directly into the polystyrene column body, eliminating the adhesive-extractable interference at the frit interface that can compromise sensitive LC-MS or enzyme-based assays when bonded frits are used.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill these columns fit my existing SPE manifold?\u003c\/strong\u003e\u003cbr\u003eThe 7-inch body is designed for large-format SPE manifolds, including standard 20-port and 24-port tube-format vacuum manifolds and gravity-flow stands configured for 7-inch columns. If your current manifold is sized for 5-inch columns, the 7-inch body will not seat correctly — verify your manifold's tube-position dimensions before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAre there other filter grades available in this same 7-inch polystyrene format?\u003c\/strong\u003e\u003cbr\u003eYes. The Caplugs® Evergreen line includes two sibling products: 208-3376-050 (Coarse filter, 90–135 µm) and 208-3377-050 (Medium filter, 45–90 µm), both in the same 7-inch PS natural format at 200\/Bag. Select the coarser grades for higher-flow gravity screening applications where filtrate clarity is less critical.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"7\\\" SPE Columns, Fine Filter (15–45 µm), Polystyrene, Natural, 200\/Bag — Caplugs® Evergreen 208-3378-050\",\"sku\":\"2083378050E1\",\"mpn\":\"208-3378-050\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Caplugs® Evergreen\"},\"material\":\"Polystyrene (PS)\",\"color\":\"Natural\",\"offers\":{\"@type\":\"Offer\",\"priceCurrency\":\"USD\",\"price\":\"194.10\",\"availability\":\"https:\/\/schema.org\/InStock\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What makes the fine (15–45 µm) filter grade the right choice for LC-MS\/MS prep?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 15–45 µm pore rating delivers the highest filtrate clarity in the column line, removing fine particulates that would otherwise cause analytical column fouling, increased back-pressure, or injection carryover at the trace detection limits typical of LC-MS\/MS and GC-MS confirmation methods. 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